CALISTOGA, Calif. — Firefighters are facing another devastating round of the low humidity, dry foliage and strong weekend wind gusts up to 60 mph Friday as they battle more than 20 blazes in the deadliest week of wildfires in state history.

The death toll from Northern California's relentless wildfires increased to 31 Thursday with a report from Sonoma County Sheriff Robert Giordano Thursday night of two more fatalities.

Series - Fires - Anything - Death - Count

“We had series of statewide fires in 2003, 2007, 2008 that didn’t have anything close to this death count,” said Daniel Berlant, a deputy director with the California Department of Forestry and Fire Protection.

Over 8,000 firefighters are battling the 21 wildfires that have burned 191,437 acres. At least 3,500 homes and businesses have been destroyed and an estimated 25,000 people forced to flee.

Structures - Santa - Rosa - Home - Peanuts

Among the structures destroyed was the Santa Rosa home of "Peanuts" creator Charles Schulz. His 78-year-old widow Jean Schultz escaped the house, which burned to the ground, her stepson said Thursday.

The Schulzes built the California split-level home in the 1970s and the cartoonist lived there until his death in 2000.

Schulz - Studio - Artwork - Memorabilia - Charles

Schulz usually worked at an outside studio and most of his original artwork and memorabilia are at the Charles...